Komatsu 930E-2, Shop Manual

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INSPECTION AND MAINTENANCE
SCHEDULES FOR ELECTRIC
DETECTION AND ACTUATION SYSTEM
Proper inspection and maintenance procedures
must be performed at the specified intervals to be
sure that the Electric Detection and Actuation Sys-
tem will operate as intended.
Daily
The machine operator should manually test system
power by pushing the button and noting illumination of
indicator light. This confirms battery power is available.
If light is not illuminated, refer to "Troubleshooting"
covered in this section.
Normal Maintenance Based On Actual Operating
Hours
Total system should be checked monthly or sooner,
depending on working conditions or truck mainte-
nance to perform total system check.
NOTE: The squib should be replaced after being
in service for five years. The proper disposal of
the old squib should be done by actuating the
squib within the actuator body. To do this, remove
actuator LT-5-R cartridge (PB0674) from body.
Install test jumper assembly to end of linear de-
tection wire assembly. This jumper will service as
a wiring short and cause the squib to discharge.
Remove jumper, clean actuator, install new squib
and reinstall cartridge.
System is now back in service.
Record date of installation of new squib.
1. Check all mounting bolts for tightness.
2. Check all wiring connectors for tightness and
possible evidence of corrosion.
3. Inspect detection and power wire as follows:
a. Check for wear due to abrasion (at wall pene-
trations, around corners, etc.).
b. Check for damage from direct impact or other
abuse.
c. Check mounting locations for tightness.
d. Insure mounting hardware has not come loose
or been broken, either of which would allow the
wire to sag.
4. Weigh the actuation cartridge on the Electric De-
tection and Actuation System. Replace cartridge
if the weight is 1/4 oz. (7 g) less than that stamped
on cartridge. Check the cartridge threads for
nicks, burrs, cross threading and rough on feath-
ered edges. Examine gasket in bottom of Electric
Detection and Actuation System for elasticity. If
the temperature is below freezing, warm the gas-
ket with body heat to insure a good seal. Clean
and coat lightly with a high heat resistant silicone
grease.
Do Not reinstall cartridge at this time.
5. Test system power by depressing button on con-
trol module. Note illumination of light while button
is depressed.
6. Remove squib connector before proceeding with
next series of checks (Figure 2.3-19).
7. Using the furnished test kit assembly, proceed to
the end of the last length of detection wire. Re-
move the plugged blank connector and install the
jumper assembly (retain plugged blank connector
to be reinstalled after testing is completed).
8. With jumper in place, screw the squib connector
into receptacle on test module (Figure 2.3-20).
Light on the test module should immediately illu-
minate. This test confirms that the detection wire
is properly installed and will function as intended.
FIGURE 2.3-19. REMOVE CARTRIDGE AND
DISCONNECT SQUIB
M2.3-6 Ansul "Checkfire" Electric Detection and Actuation System M02003